<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图 -->
        <el-card>
            <!-- 添加角色按钮区域 -->
            <el-row>
                <el-col>
                    <el-button type="primary">添加角色</el-button>
                </el-col>
            </el-row>

            <!-- 角色列表区 -->
            <el-table :data="rolesList"
            border
            stripe>
                <!-- 展开 -->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <!-- 栅格系统布局 循环 第一个参数数组元素 第二个参数下标-->
                        <el-row :class="['vcenter','bdbottom',i1 === 0 ? 'bdtop' : '']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                            <!-- 渲染一级权限 -->
                            <el-col :span="5">
                                <el-tag  closable
                                @close="removeRightById(scope.row,item1.id)">
                                    {{item1.authName}}
                                </el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <el-col :span="19">
                                <!-- 通过for循环 嵌套渲染二级权限 -->
                                <el-row :class="['vcenter',i2 === 0 ? '' : 'bdtop']" v-for="(item2,i2) in item1.children" :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag type="success" 
                                         closable
                                        @close="removeRightById(scope.row,item2.id)">
                                            {{item2.authName}}
                                        </el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="18">
                                        <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id"
                                        closable
                                        @close="removeRightById(scope.row,item3.id)">
                                            {{item3.authName}}
                                        </el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row> 
                    </template>
                </el-table-column>
                <!-- 索引列 -->
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" width="300px"> 
                    <template slot-scope="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit" @click="removeRolesById(scope.row.id)">编辑</el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
                        <el-button size="mini"  type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>

             <!-- 修改用户的对话框 -->
            <!-- <el-dialog
                title="修改用户"
                :visible.sync="editRolesVisible"
                width="50%"
            
                >
                <el-form :model="editForm"  label-width="70px" >
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username" disabled></el-input>
                    </el-form-item>
                  
                </el-form>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="editDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="editUserInfo">确 定</el-button>
                </span>
            </el-dialog> -->
        </el-card>

        <!-- 分配权限 -->
        <el-dialog
        title="分配权限"
        :visible.sync="SetRightDialogVisibile"
        width="50%"
        @close="SetRightDialogClose">
            <!-- 树形控件 -->
            <el-tree :data="rightsList" 
            :props="treeProps" 
            show-checkbox node-key="id" 
            default-expand-all 
            ref = "treeRef"
            :default-checked-keys="defKeys"></el-tree>
            <span slot="footer" class="dialog-footer">
                <el-button @click="SetRightDialogVisibile = false">取 消</el-button>
                <el-button type="primary" @click="allotRights">确 定</el-button>
            </span>
        </el-dialog>

    
    </div>
</template>

<script>
export default {
    data(){
        return {
            // 所有角色列表数据
            rolesList:[],
            // 展示分配权限对话框的显示与隐藏
            SetRightDialogVisibile:false,
            // 所有权限的数据
            rightsList:[],
            // 树形控件的绑定对象版本
            treeProps:{
                label:"authName", //"看到的属性字段"
                children:'children' // 下一级对象名
            },
            // 默认选中节点id值数组
            defKeys:[],
            // roldId 当前权限所属人
            roldId:"",

        }
    },
    created(){
        this.getRolesList()
    },
    methods:{
        // 获取所有角色的列表
        async getRolesList(){
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200){
                return this.$message.error("获取失败")
            }
            this.rolesList = res.data
            console.log("数据",res.data);
            
        },
        // 根据id删除对应的权限
        async removeRightById(role,rightId){
            // 弹框提示用户是否要删除
            const confirmRestult =  await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)  //捕获错误行为
            if(confirmRestult !== 'confirm'){
                return this.$message.info("用户取消了删除")
            }

            // 发起删除请求
            const {data:res}= await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
            console.log(role.id,rightId);
            if(res.meta.status !== 200){
                console.log(res.meta.status);
                return this.$message.error("删除权限失败")
            }

            // this.getRolesList() 不建议渲染页面全部数据，只渲染当前角色数据
            role.children = res.data
        },
        // 展示分配权限的对话框
        async showSetRightDialog(role){
            this.roleId = role.id
            // 获取所有权限树形列表
            const {data:res} = await this.$http.get('rights/tree')

            if(res.meta.status !== 200){
                this.$message.error("获取到所有权限功能失败")
            }
            this.rightsList = res.data

            
            this.getLeafKeys(role,this.defKeys)
            console.log("keys",this.defKeys);
            this.SetRightDialogVisibile = true
        },
        // 递归获取三级权限id值 保存到defKeys数组中
        getLeafKeys(node,arr){
            // 当前node节点不包含children属性，则是三级阶段
            if(!node.children ){
                return arr.push(node.id)
            }

            node.children.forEach(item => this.getLeafKeys(item,arr))
        },
        // 关闭对话框清空数组
        SetRightDialogClose(){
            this.defKeys=[]
        },
        // 点击为角色分配权限
        async allotRights(){
            const keys = [
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            const idstr = keys.join(',')
            console.log(typeof(this.roldId));
            const {data:res}= await this.$http.post(`roles/${this.roleId}/rights`,{rids:idstr})
            if(res.meta.status !== 200){
                console.log("rold",this.roleId);
                console.log(res);
                return this.$message.error("分配权限失败")
            }

            this.$message.success('分配权限成功')
            this.getRolesList()
            this.SetRightDialogVisibile = false
        }


        // 编辑
        // async removeRolesById(id){
        //     console.log(id);
        // }
    }
}
</script>

<style lang="less" scoped>
    .el-tag{
        margin: 7px;
    }

    .bdtop{
        border-top: 1px solid #eee;
    }

    .bdbottom {
        border-bottom: 1px solid #eee;
    }

    .vcenter {
        display: flex;
        align-items: center;
    }
</style>